Machine for operating upon the soles of shoes



Apr. 7 1923.

L. A. CASG RAIN MACHINE FOR OPERATING UPON THE SOLES OF SHOES Filed Dec. '15, 191'? Tlllllll Patented Apr. 17, 1923.

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LOUIS A. GASGRAIN, F BEVERLY, MASSACHUSETTS, riSfiIGNOR UNITED SHOE MACHINERY CORPORATION, OF PATER-SON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR OPERATING UPON THE SOLES OF SHOES.

hpplication filed December 15, 1917. Serial No. 207,294.

To all 'w from it may concern:

Be it known that I, Louis A. O'AsGRAIN, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for Operating upon the Soles of Shoes, of which the following description, in connection with the accompany ing drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for operating upon the soles of shoes and particularly to feeding mechanism for apparatus for exerting pressure upon the edges of rubber soles at the points of attachment to the upper.

In applying rubber soles to shoes, for e211 ample those of the sneaker type, it is customary to first cement about the fabric of the upper a narrow strip of high grade rubber termed a foxing, and to this cement the turned-up edge of the sole proper in its unvulcanized state, the foxing serving as a 2 means for securing the sole and being herein considered as a portion of the sole structure.

To cause the top or visible edge of the foxing to conform and adhere to the upper of the shoe and likewise the edge of the sole to the foxing, a well-known practice is to exert pressure on these edges with a tool, which may consist of a roll rotatable in a handle and having a nurled periphery. I have found that a convenient manner of applying the pressure is to employ a nurling ma chine, such as is disclosed in my Patent No. 768,560, dated August 23,1904. In using this machine, however, there is a tendency when the operator checks the advance of the work, to enable him to round the more curved portions better or to act longer upon a particular section, for the positively driven feed wheel rotating at a constant speed to slip over the sole resting against it and in so doing to deface the unvulca-nized surface, which often bears a design in re- .lief. In these nurling machines it is also diflicult to cause the tool to follow properly the edges of. the sole elements, as the location of the feed wheel with respect to the tool will not permit the operator to bring the sole edges intocorrect co-operation with the tool throughout their entire extent while the sole remains in contact with the feed wheel.

An object of this invention is to provide, in a machine of the character above indicated, means for preventing this defacement of the work by the rubbing of the feeding member upon it. This I may accomplish by so arranging the feeding member that its rate of movement may vary independently of the driving mechanism. The illustrated means for attaining this object is by inter posing between the feed wheel and its driving shaft a frictional connection, which allows the wheel to slip upon the shaft while the feeding surface may remain in either rolling contact with the work, but moving at a speed less than the driving shaft, or in fixed relation to the work.

Another object of the invention is to adapt the feed wheel to serve as a bottom gage to position the edge of the sole, including the foxing, correctly with reference to a tool operating at all points along its irregular contour. This result I preferably eifect by locating the feeding surface of the wheel at one side both vertically and horizontally of the pressure. surface of the tool, so that the work may be swung about the periphery of the wheel-to bring readily the entire juncture of the sole and upper into contact with the tool.

The invention has as a further object, the provision of an improved tool for more effectively operating upon such portions of the work as the turned over edges of the sole at the more sharply rounded portions, as the toe and heel, to smooth irregularities and produce better adhesion to the surface beneath.

One embodiment of the invention trated in the which.

Fig. his a side elevation of a portion of a nurling machine with my improved feeding mechanism applied thereto, parts being in sectiomand Fig. 2 is an enlarged sectional detail of the feeding mechanism and nurling tool.

At 101 have shown a portion of the frame of the machine of the previously mentioned patent, in which is mounted actuating mechanism .12 for a slide 14 carried in the frame for vertical reciprocation. This slide is illusaccompanying drawing, H1

has at its lower extremity a tool 16, which may be disk-shaped, provided at 18 with a nurled, work-indenting peripheral portion or operating surface and at 19 with an adjacent work-pressing portion, shown as generally cylindrical in form. Then the work, as the edge of a rubber sole '5 to be cemented to the upper S of a shoe, is pressed against this operating surface, the nurled portion in its reciprocation presses the edges ofthe elements together, bringing them into better contact to ensure their perfect union, smoothing out irregularities which may exist, and impressing upon the sole a design which is effective in concealing defects. The portion 19 operates over the adjacent surfaces and especially acts to press out and compact the bulges in the plastic unvulcanize'd sole which'are caused as it is drawn over the more curved portions of the upper.

Driven from a vertical shaft 20, geared at 22 to the actuating mechanism, is a parallel sh aftfi journaled in abracket'QG upon the frame, this last-named shaft being rotate'd from the'shaft'QO through gearingQY.

Fast upon the shaft/24c, just below theb'ra-cket, is a'sleeve '28, and abutting against the lower face of this sleeve is a friction can:

tool.

member 30, which may consist of a of fibre. Surrounding the shaft for rotation thereon and resting against the disk 30 is afeed wheel W, conveniently made up of libre'disks 32 clamped between cheek piecesfie. On the opposite or lower side of thefeed wheel is another friction disk 36, similar to 30'and also preferably of fibre, which is backed by a was'herBS. lVith this washer contacts a'helical spring 40 encircling the shaft 24 and supported at its lower extremity upon a nut 42, which is -threade'd upon the end of the shaft and retainedin the position to which it may be turned by a check nut 44.

The periphery of the feed wheel VVuis preferably curved laterally, as shown .at 46 to'permit the sole of the shoe resting against itto be readily rocked in moving the juncture ofthe sole and upper under the tool 16. 'As illustrated, the feeding surface of this wheel is entirely below the pressure surface of the tool, so that "the work may at all times remain in contact with the feed wheel while the surface to which pressure is" to bea'pplied is being operated on bythe The feeding surface "is also considerably atone side of the vertical axis of the pressuresurface, thisenabling'the operator to'swing the work upon the feed wheel to cause the co-operation of the pressure surfaceand sole'edg'e, either attheporti'ons. as about th'etoecriheel, where the line of contact "lies upon "sur fac'esfn'eai ly 'at right angles" to "the tread f offthe "-I'so' or at the shankportion;especially at' the nside4-where proach parallelism to the tread. By choosing a proper spring :0, or by adjusting the tension by means of the nuts 42 and in, the frictional engagement between the feed wheel and shaft may remain such that normally, or when the work is being moved under the tool at the same rate'as that at which the periphery of thewheel is traveling, the wheel will be caused to turn with the shaftto aid the operator in carrying the Work under the tool, but when the rate of advance of the work is for any reason decreased, as in moving it more slowly to round the sharply curved portions at the toe and heel or perhapsstoppingit con'i 'iletely to longer operate upon a particular portion, the feed wheel may either turn at a less speed than the shaft or may remain stationary, the slipping); of the friction connections permitting this. "With such an arrangement there will be no rubbing offthe feeding surface over the work and therefore no danger of defacing the unvulcanized pattern-bearing surface.

Having thus described my invention, what I claim. as new and desire to secureby Letters Patent of the United States is? 1. In a machine for attaching the edge of the foxing of a rubber soled shoe to the upper preliminary to vulcanization, the com bination with a pattern tool adapted to have rolling engagement with the foxing, and means for in' partingpercussional impulses to the tool in the direction to effect adhesion of an unvulcanized rubber foxing, to the shoe upper, of a feed wheel arranged relatively to the tool to engage the sole of a shoe held in the hands of the operator and gage the distance from the shoe bottom edge at which the tool shall act, power means to drive the feed wheel, and a connection between the wheel and the power means constructed and arranged to prevent the wheel from rubbing the surface of the nnvulcanized sole if the operator holds the shoe back.

to enable the tool to treat one partof the foxing longer than another part.

'2. In a machine tor attaching the edge .of the foxing of a rubber soled shoe to the :upper preliminary to vulcanizatiomthe combination with a tool adapted to have engagement with the faxing to effect adhesion ofan unvulcanized rubber i oning tofthe shoe upper. of a feed wheel arranged relatively to the tool to engage the sole of-a shoe held in the hands of the operator and gage the distance from the shoe bottom edge atwhich thetoolshall act, power meansmto drive the feed wheel, and operating connections between the wheel and the power means constructed and arranged to cause thespeed of the wheel t'obe variediin'idirect response to the pressure of Vthec shoe sole "stfthe wheel to control theflopgiratioii i soles of ment of any part of the foxing and prevent the wheel from rubbing the surface of the unvulcanized sole if the operator holds the shoe back to enable the tool to treat one part of the foxing longer than another part.

3. In a machine for operating upon the shoes having readily defaceable portions, an operating tool, driving mechanism, a movable member having a smooth surface contacting with the readily defaceable portion for feeding the work with respect to the tool, and connections between the driving mechanism and the feeding member constructed and arranged to permit the rate of movement of said feeding member to vary independently of the driving mechanism to prevent the feeding member from rubbing and defacing the work.

4. In a machine for operating upon the soles of shoes having readily defaceable portions, an operating tool, a driving shaft, a wheel having a smooth periphery contact ing with the readily defaceable portion for feeding the work with respect to the tool, and a friction connection between the driving shaft and feeding wheel allowing the wheel to slip upon the shaft while the feeding surface remains in non-slipping contact with the sole.

5. In a machine for operating upon an article having a readily defaceable surface, a drive shaft, a feed member arranged for frictional feeding contact with said surface, and a friction connection between the drive shaft and the feed member constructed and arranged to slip when the feeding movement of said article is restrained, to avoid injury of the readily defaceable surface by relative movement of the feed member and article.

6. A machine for indenting the edge of a sole, having, in combination, an indenting wheel mounted to rotate freely on its axis, a feed disk mounted adjacent to the wheel to engage the bottom of the sole to carry the sole edge past the indenting wheel, and a friction drive for the feed disk constructed and arranged to slip when the feeding movement of the sole is restrained, to avoid in jury to the sole.

' In a machine for exerting pressure upon the edges of a rubber sole at its points of attachment to an upper ofa shoe, a pressure tool, and a feed wheel for contact with the bottom of a sole the feeding surface of the wheel being situated at one side both horizontally and vertically of the pressure surface of the tool whereby the feed wheel may serve as a gage to permit the work to be swung upon the periphery of the wheel to bring the irregular juncture of the sole and the upper into contact with the tool at all points.

8. In a machine of the class described, a tool having an operating surface includinga work-indenting portion and an adjacent cylindrical work-pressing portion formed and arranged to engage the edge of the work, and means for reciprocating the tool toward and from the work to produce theindenting and pressing effect.

9. In a machine of the class described, a tool having an operating surface including an annular nurled portion anda smooth, generally-cylindrical portion, and means for reciprocating the tool to press the nurled and smooth port-ions against adjacent surfaces of the work.

10. In a machine for operating upon shoes having soles drawn over the uppers in a plastic state, a tool having an operating surface including a portion formed and arranged to indent a sole at its juncture with an upper and a portion arranged to press upon the sole where it rounds over the upper. j

11. Ina machine for exerting pressure upon the edges of a rubber sole at its points of attachment to an upper of a shoe, sure tool, and a frictionally driven feed wheel for contact with the bottom of a sole, the feeding surface of the feed wheel being curved laterally to permit the sole of the shoe resting against it to be readily rocked in moving the juncture of the sole and the upper under the pressure tool.

12. A machine for indenting the edges of a rubber sole at its points of attachment to the upper of a shoe, having, in combination, an indenting wheel mounted to rotate freely on its axis as the work is fed, a power a presdriven feed wheel for feeding the work and In testimony whereof I have signed my.

name to this specification.

LOUIS A. CASGRAIN. 

